From the drop down menu select the geometry of the portal frame. A 3 member portal frame has a single top member, supported by posts at each end. A 4 member portal frame, has two top members, joined at an Apex.
Select the Supporting load cases for the beam/lintel being designed for.
If none of these are appropriate please contact Specifi Help.
Enter a Description or name to help you identify the portal. note specifi numbers each portal automatically
Note Specifi numbers each portal automatically
Select the beams Deflection (max) from the drop down list. this helps the software chose the correct member for your design.
The options are;
For example: A portal/lintel with a span of 2.0 m and “Minimal Deflection” selected has an allowable deflection of 5.55mm (minimum of Span/360 = 5.55mm or 6mm).